SKU: 40902314932

Hillman 5/16 in. Diameter x 2-1/2 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screws, Coarse Thread, 100-Pack

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Description

Hillman 5/16 in. Diameter x 2-1/2 in. Length Grade 8 Heat-Treated Steel Hex Head Cap Screws, Coarse Thread, 100-PackHillman Grade 8 Hex Head Cap Screws, 5 16" x 2 1 2", 100 Pack Heavy duty Grade 8 hex head cap screws engineered from heat treated steel for high strength fastening. Coarse thread design with washer face under the head ensures secure seating and reliable performance in demanding applications. Key Features: Grade 8 Strength: Heat treated steel delivers superior tensile strength for heavy duty projects Coarse Thread: Provides fast, secure engagement in

Hillman Grade 8 Hex Head Cap Screws, 5/16" x 2-1/2", 100-Pack

Heavy-duty Grade 8 hex head cap screws engineered from heat-treated steel for high-strength fastening. Coarse-thread design with washer face under the head ensures secure seating and reliable performance in demanding applications.


Key Features:

  • Grade 8 Strength: Heat-treated steel delivers superior tensile strength for heavy-duty projects
  • Coarse Thread: Provides fast, secure engagement in tapped holes or with hex nuts
  • Washer Face Head: Built-in washer face under the hex head improves sealing and load distribution
  • Partially Threaded Shank: Ideal for alignment and shear strength in bolted joints
  • 100-Pack Convenience: Boxed quantity for jobsite efficiency and bulk stocking

Specifications Table:

Specification Details
Brand Name Hillman
Material Steel
Finish Heat-treated yellow dichromate
Grade 8 (USS Grade 8)
Head Type Hex head with washer face
Diameter 5/16 inch
Length 2-1/2 inch
Thread Type Coarse (USS)
Threading Partially threaded
Number in Package 100
Packaging Type Boxed

Frequently Asked Questions (FAQ):

Q: Are these fully threaded?
A: No. They are Grade 8 cap screws that are partially threaded along the shank.


Q: What tools are needed for installation?
A: Tighten with a wrench or a drill/driver equipped with the correct hex socket.


Q: Can these be used outdoors?
A: They are heat-treated steel with a yellow dichromate finish for wear resistance; for corrosive outdoor environments, consider additional coatings or appropriate washers.


Q: What thread type do these have?
A: Coarse thread (USS).


Q: Do they include nuts or washers?
A: No. This pack includes only the hex head cap screws.


Industrial Strength with Sleek Utility

These Grade 8 hex cap screws bring a refined, utilitarian edge to any build, marrying strength with clean geometry. The washer-faced hex head offers a crisp silhouette while ensuring a flawless seat. Style them in exposed hardware applications for a subtle punch of industrial chic, or keep them concealed for uncompromising performance. A staple of luxurious, precision-crafted spaces.


Upgrade your fasteners to Grade 8 performance—add this 100-pack to your project and secure a stronger, longer-lasting build.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 40902314932

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4.6 ★★★★★
Based on 18 reviews
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R
Verified Purchase
Rudy Ruiz
Belleville, US
★★★★★ 5
Pomeranian perfect size
Small size perfect Pomeranian (1 yr old) she prefers over other chews - have ordered twice
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
C
Verified Purchase
C
Lowell, US
★★★★★ 5
My puppies favorite bone to chew
I’ve bought at least a half a dozen of puppy bones for my doggie to try, the majority being from Nylabone, and the others from hartz. Her first bone was a pink puppy Nylabone xsmall sise. She definitely must have liked that one but unfortunately I felt like I had to take it away from her too soon, she was teething more then, but even so, thought it was unsafe when I saw little pieces come off and her trying to chew them. I really like these the best, though I don’t think I’ll be ordering any more at least not until she finishes her new ones. I don’t know what flavor she likes more, it might even be a color thing, but I think she prefers the orange ones which are peanut butter flavored. These are really ideal for toy breeds. My pup is still growing, she’s almost 7 months now, but unsure when she will stop growing, for reference she is a chocolate sable yorkiepoo, not sure of how much she weighs right now, but would estimate she weighs around 5.5-6 pounds. These are perfect for her, and I feel like they out live the other ones I’ve gotten, or she just has more interest in them. I bought a second package on subscribe and save (or possibly on my first and forgot I had a new order and didn’t return), but didn’t open the new package until recently as I felt the first pack were starting to look a bit knawed off, but in the middle there was still plenty of chew left. Oddly, she has prefered the old orange one vs the brand new orange one despite them being the exact same toy and flavor. I think she just hasn’t broken it in yet and I overloaded her with too many toys! I also got them for a great price, for some reason I noticed that the price increased nearly double of what I paid, and now they habe decreased a bit but still are about $2 more than what I paid. She loves all toys, and has many plush kinds. She still teeths, so when she is extra hyper and such, I feel like the bone helps occupy her for a moment. All in all I’d reccomend these out of any puppy bones to chew for toy breeds!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2022
J
Verified Purchase
J CASSIN
Louisville, US
★★★★★ 4
Nice chew toy
Puppy likes but for me to hold so she can chew is a little difficult.
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Reviewed in the United States on May 8, 2026
A
Verified Purchase
Amazon Customer
West Palm Beach, US
★★★★★ 5
Love nylabones
Nylabbones did it again. The pugs love these. They're so cute and tiny. Perfect for their lithe selves. They're still safe and soft and very chewable.
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Reviewed in the United States on November 16, 2025
A
Verified Purchase
Anoni Miss
Los Angeles, US
★★★★★ 3
Not safe, easily chewed bits off
Mixed feelings. My puppies love them and love to chew on them but also chewed the edges off pretty quickly. I had to take away the first one after only a couple days of intermittent chew so it’s really not durable or long lasting. I don’t feel this is safe for a 12 week old puppy which is super small and can be a choking hazard.
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Reviewed in the United States on October 6, 2025

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